LOS ANGELES, CA - FEBRUARY 12: Rapper Common arrives at the 54th Annual GRAMMY Awards held at Staples Center on February 12, 2012 in Los Angeles, California. (Photo by Larry Busacca/Getty Images For The Recording Academy)

Members of the group Foster The People pose on the red carpet at the Staples Center for the 54th Grammy Awards in Los Angeles, California, February 12, 2012. AFP PHOTO Joe KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images)

Members of the group Foster The People pose on the red carpet at the Staples Center for the 54th Grammy Awards in Los Angeles, California, February 12, 2012. AFP PHOTO Joe KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images)

The members of "The Band Perry" pose on the red carpet at the Staples Center for the 54th Grammy Awards in Los Angeles, California, February 12, 2012. AFP PHOTO Joe KLAMAR (Photo credit should read JOE KLAMAR/AFP/Getty Images)

LOS ANGELES, CA - FEBRUARY 12: Musicians Nathan Followill, Caleb Followill and Jared Followill of the band Kings of Leon arrive at the 54th Annual GRAMMY Awards held at Staples Center on February 12, 2012 in Los Angeles, California. (Photo by Larry Busacca/Getty Images For The Recording Academy)

LOS ANGELES, CA - FEBRUARY 12: Robbie the Robot (L) and David Sharpe of David Sharpe and The Papa Hugs Band arrives at the 54th Annual GRAMMY Awards held at Staples Center on February 12, 2012 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)

LOS ANGELES, CA - FEBRUARY 12: Musician Kimberly Perry of The Band Perry arrives at the 54th Annual GRAMMY Awards held at Staples Center on February 12, 2012 in Los Angeles, California. (Photo by Larry Busacca/Getty Images For The Recording Academy)

LOS ANGELES, CA - FEBRUARY 12: Musician Kimberly Perry of The Band Perry arrives at the 54th Annual GRAMMY Awards held at Staples Center on February 12, 2012 in Los Angeles, California. (Photo by Larry Busacca/Getty Images For The Recording Academy)